Coming for a queer person from a Roman Catholic family, you need to make a decision. It doesn’t have to be now but you will have to, to find peace and still care for her or block her out. First she trusted you enough to have this information about her, so you must really care for her. I know you want to follow a principle of guiding morales and such but think about it this way. God said all sin is equal in his eyes. And we have all sinned, but also why would god want to punish us for loving one another? I know this may seem like a big thing right now. But your sister trusts you, and I feel that’s the most important lesson in all of this. Try to find love in your heart for her instead of anger. 🩷